Clashes erupted on Monday morning between security forces and protesters in Cairo's Tahrir Square, rallying against the country's military rulers and demanding a rapid transition to civilian rule dpa reported
At least 10 people were killed since clashes began on Saturday morning, and over 1,500 injured, according to government figures.
Thousands of protesters poured into Tahrir on Sunday, faced down by security forces, backed by military police.
Government forces used tear gas and batons to disperse the demonstrators. Activists say rubber bullets and shotguns were also used.
The scene was reminiscent of the popular revolt in the same place against the regime of former president Hosny Mubarak earlier this year.
Opposition groups have become more critical of the military rulers for allegedly dragging their feet on handing power over to an elected civil administration.
The violence came around a week before Egyptians go to the polls to elect a new parliament.